Alright, downloaded everything I could for free off the Cerberus Network and finally started my ULTIMATE INSANITY PLAYTHROUGH.
I'm Terry Shepard. Infiltrator. Renegade. I am going to do EVERYTHING ME2 has to offer (sans those bullshit 160MSP costume and weapon packs)
Okay. So I reloaded my Level 60 ME1 save. Got a fuckton of bonus credits and resources since I've already beaten ME2 once also, so I'm getting upgrades up the wazoo already. Definitely making Insanity easier off the bat.
Got the Cerberus Battle Suit, one of the Cerberus Network freebies. It looks awesome and gives nice bonuses to health and shields.

one complaint is that the helmet isn't optional and Shepard leaves it on wile he's talking to people. You can still hear him fine but I like to see the facial expressions and stuff. Oh well.
Also got the Arc Projector (another freebie DLC). It's fairly broken, does huge damage even on Insanity and hits multiple targets. Seems to be making the game a lot easier, as it can fry a whole group of enemies without too much trouble. Really fun gun!
Infiltrator class is fun as hell, I put heaps of points into the cloak ability and now maxed it into Assassination Cloak. So you cloak in cover, then pop a sniper headshot which one-shots even through shields and armor. Awesome.
Just did the Kasumi DLC. It was great! The bad guy was South African which had me in stitches. Really cool mission too. The SMG you get is dope as fuck. Fires real fast with no reticule bloom so it's super accurate. Even more awesome with the cloak damage bonus. I'm starting to think I'm having an easier time on Insanity with all this DLC eqiuipment

Kasumi herself seems to be a really good sqaudmate, her Shadow Strike kicks ass and she's great at keeping herself alive during firefights.
Might tackle the Overlord DLC next. Fuck this game is so awesome, I forgot how sweet it was!